Search Results - "Wirtz, S. S"

A study on the influence of particle shape and shape approximation on particle mechanics in a rotating drum using the discrete element method by Höhner, D., Wirtz, S., Scherer, V.

“…In this study experimental and numerical investigations with the discrete element method (DEM) on the mechanical interactions of spheres and polyhedral dices…”
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Transient DEM-CFD simulation of solid and fluid flow in a three dimensional blast furnace model by Bambauer, F., Wirtz, S., Scherer, V., Bartusch, H.

“…A numerical investigation of gas and solid flow as well as the liquid accumulation in a scaled Blast Furnace (BF) model was carried out using the discrete…”
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Numerical investigation of the impact of coating layers on RDF combustion and clinker properties in rotary cement kilns by Pieper, C., Wirtz, S., Schaefer, S., Scherer, V.

“…[Display omitted] •CFD-simulations of rotary cement kilns considering coating layers are conducted.•Numerical models for RDF, coating and clinker bed are…”
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Simulating municipal solid waste incineration with a DEM/CFD method – Influences of waste properties, grate and furnace design by Wissing, F., Wirtz, S., Scherer, V.

“…The current work presents an initial approach of using a particle based method (Discrete Element Method, DEM) to simulate municipal solid waste (MSW)…”
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A numerical study on the influence of particle shape on hopper discharge within the polyhedral and multi-sphere discrete element method by Höhner, D., Wirtz, S., Scherer, V.

“…In this study 3D DEM-simulations of hopper discharge using non-cohesive, monodisperse spherical and polyhedral particles as well as particle shapes generated…”
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A study on the influence of particle shape on the mechanical interactions of granular media in a hopper using the Discrete Element Method by Höhner, D., Wirtz, S., Scherer, V.

“…In this study experimental and numerical investigations with the Discrete Element Method (DEM) on the mechanical interactions of particles with varying…”
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Experimental and numerical investigation on the influence of particle shape and shape approximation on hopper discharge using the discrete element method by Höhner, D., Wirtz, S., Scherer, V.

“…In this study experimental and numerical investigations with the discrete element method (DEM) on the discharge of spheres and polyhedral dices from a hopper…”
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A study on the validity of the multi-sphere Discrete Element Method by Kruggel-Emden, H., Rickelt, S., Wirtz, S., Scherer, V.

“…Granular materials in industrial applications or nature usually consist of a wide variety of differently formed particles. Very often the shape of the involved…”
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Investigation of the radiative heating of cubic particles with DEM/CFD and the BO/DO approach by Jaeger, B., Tyslik, M., Wirtz, S., Schiemann, M.

“…The combined “Blocked-Off & Discrete Ordinates” (BO/DO) approach is used within a DEM/CFD frame to model the radiative heating of stationary and moving…”
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Review and extension of normal force models for the Discrete Element Method by Kruggel-Emden, H., Simsek, E., Rickelt, S., Wirtz, S., Scherer, V.

“…For the simulation of dense granular systems the Discrete Element Method based on a soft-sphere approach is commonly used. In such simulations collisions…”
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Field experiments for understanding and quantification of rill erosion processes by Wirtz, S., Seeger, M., Ries, J.B.

“…Despite many efforts over the last decades to understand rill erosion processes, they remain unclear. This paper presents the results of rill experiments…”
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Comparison of the multi-sphere and polyhedral approach to simulate non-spherical particles within the discrete element method: Influence on temporal force evolution for multiple contacts by Höhner, D., Wirtz, S., Kruggel-Emden, H., Scherer, V.

“…In this paper a multi-sphere as well as a polyhedral approach is investigated as method of shape-approximation within the discrete element method. The two…”
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Interaction of the combustion of refuse derived fuel with the clinker bed in rotary cement kilns: A numerical study by Pieper, C., Liedmann, B., Wirtz, S., Scherer, V., Bodendiek, N., Schaefer, S.

“…This paper presents CFD simulations of an industrial scale rotary kiln for cement clinker production. The fuel for the kiln flame is a mixture of pulverized…”
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A study on tangential force laws applicable to the discrete element method (DEM) for materials with viscoelastic or plastic behavior by Kruggel-Emden, H., Wirtz, S., Scherer, V.

“…The discrete element method is a widely used particle orientated simulation approach for modeling granular systems. It is based on tracking each particle's…”
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Experimental analysis of wood pellet degradation during pneumatic conveying processes by Jägers, J., Wirtz, S., Scherer, V., Behr, M.

“…The size reduction of wood pellets during pneumatic transport in a laboratory test rig is investigated. For the quantification of pellet breakage and…”
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The impact of heart failure on patients and caregivers: A qualitative study by McHorney, Colleen A, Mansukhani, Sonal G, Anatchkova, Milena, Taylor, Natalie, Wirtz, Heidi S, Abbasi, Siddique, Battle, Lynwood, Desai, Nihar R, Globe, Gary

“…Heart failure is rising in prevalence but relatively little is known about the experiences and journey of patients and their caregivers. The goal of this paper…”
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Threats to Validity of Nonrandomized Studies of Postdiagnosis Exposures on Cancer Recurrence and Survival by CHUBAK, Jessica, BOUDREAU, Denise M, WIRTZ, Heidi S, MCKNIGHT, Barbara, WEISS, Noel S

“…Studies of the effects of exposures after cancer diagnosis on cancer recurrence and survival can provide important information to the growing group of cancer…”
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An automated and continuous method for the optical measurement of wood pellet size distribution and the gravimetric determination of fines by Jägers, J., Wirtz, S., Scherer, V.

“…This paper presents an automated, continuous method to determine wood pellet size distributions of larger and, hence, representative samples based on…”
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Combustion of Straw Pellets in an Agitated Fuel Bed: Experiments and DEM/CFD Simulations by Buss, F., Wirtz, S., Scherer, V.

“…The influence of bed agitation during the combustion of biomass pellets was investigated experimentally and numerically. In the experiments, a bulk of straw…”
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Transient receptor potential melastatin 8 ion channel in macrophages modulates colitis through a balance-shift in TNF-alpha and interleukin-10 production by Khalil, M, Babes, A, Lakra, R, Försch, S, Reeh, P W, Wirtz, S, Becker, C, Neurath, M F, Engel, M A

“…The transient receptor potential (TRP) ion channel family is well characterized in sensory neurons; however, little is known about its role in the immune…”
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